Currently I have Ubuntu installed on a 120gb SSD, however I also have 3 more hard drives installed in the computer, 2 x 640gb in a RAID array and a 60gb SSD
What I am trying to achieve is to use the 640gb drive to store all my documents etc, the 120gb SSD to only Ubuntu and programs and then the final 60gb SSD to back up the most important documents from the 640gb drives, this must be an incremental back up system and not replace the file each time
How can I achieve this ?